Lennox LCH156H Installation Instructions Manual Download Page 30

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LGH/LCH156, 180, 210, 240, 300S

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LGH/LCH210 CHARGING CURVE CIRCUIT 1

Suction Pressure (psig)

Outdoor Temperature (°F)

115°

105°

95°

85°

75°

65°

175

130

100

110

120

110

115

120

125

130

135

140

145

150

155

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165

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LGH/LCH210 CHARGING CURVE CIRCUIT 2

Suction Pressure (psig)

Outdoor Temperature (°F)

115°

105°

95°

85°

75°

65°

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180

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Summary of Contents for LCH156H

Page 1: ...ion Page 8 Rigging Unit For Lifting Page 8 Condensate Drains Page 8 Gas Piping Page 9 Pressure Test Gas Piping Page 10 High Altitude Derate Page 10 Electrical Connections Page 10 INSTALLATION INSTRUCT...

Page 2: ...8 137 3 1 4 83 54 1 4 1378 51 1295 91 1 8 2315 BASE ELECTRICAL INLETS 8 1 4 210 10 1 4 260 4 102 GAS SUPPLY INLET For Bottom Gas Supply Only OPTIONAL DISCONNECT Factory Installed CONDENSATE DRAIN SIDE...

Page 3: ...508 15 381 60 1 2 1537 AA BB CC DD CENTER OF GRA VITY TOP VIEW 4 1 2 114 20 508 SIDE VIEW FORKLIFT SLOTS Front and Left Side Only 132 5 8 3369 LIFTINGHOLES For Rigging Front and Back 25 3 8 645 107 3...

Page 4: ...730 5 3 8 137 3 1 4 83 54 1 4 1378 51 1295 91 1 8 2315 BASE 8 1 4 210 10 1 4 260 4 102 OPTIONAL DISCONNECT Factory Installed CONDENSA TE DRAIN FLUE OUT LET SIDE VIEW FORKLIFT SLOTS Front and Left Side...

Page 5: ...IN FILTERS SIX 24 X 24 X 2 ECONOMIZER DAMPERS OPTIONAL UNIT CONTROLLER DISCONNECT Factory installed option INVERTER OPTIONAL 180H Shown LCH156 180H U 210 240H U 300S PARTS ARRANGEMENT CONDENSER COILS...

Page 6: ...ith an optional factory installed fin tube condenser coil Ultra high efficiency units are equipped with fin tube condenser coils Standard and high efficiency units are available with an optional hot g...

Page 7: ...ollowed Fines and or incar ceration may be levied for non compliance Unit Support In downflow discharge installations install the unit on a non combustible surface only Unit may be installed on combus...

Page 8: ...in unit base rail See figure 2 1 Detach wooden base protection before rigging 2 Connect rigging to the unit base using both holes in each corner 3 All panels must be in place for rigging 4 Place field...

Page 9: ...he unit gas connection must be a minimum of 11 w c 2 74kPa and a maximum of 13 5 w c 3 36kPa When making piping connections a drip leg should be installed on vertical pipe runs to serve as a trap for...

Page 10: ...unit nameplate Refer to table 1 for high altitude adjustments TABLE 1 HIGH ALTITUDE DERATE Altitude Ft Gas Manifold Pressure 2000 4500 See Unit Nameplate 4500 And Above Derate 2 1000 Ft Above Sea Lev...

Page 11: ...wiring C Wire Connections The Unit Controller will operate the unit from a thermostat or zone sensor based on the System Mode The default System Mode is the thermostat mode Refer to the Unit Controll...

Page 12: ...elded cables containing 18AWG minimum twisted pair conductors with overall shield Belden type 8760 or 88760 plenum or equivalent Connect both cable shield drain wires to TB1 7 as shown in figure 10 Wi...

Page 13: ...is manually set at the thermostat subbase fan switch With fan switch in ON position blowers will operate continuously 2 With fan switch in AUTO position the blowers will cycle with demand Blowers and...

Page 14: ...USER ROOFTOP UNIT ROOFTOP UNIT SUPPLY AIR READING LOCATION RETURN AIR READING LOCATION RETURN AIR READING LOCATION D Blower Belt Adjustment Maximum life and wear can be obtained from belts only if pro...

Page 15: ...MOTOR PULLEY NOT ALIGNED ALIGNED BELT BLOWER PULLEY MOTOR PULLEY NOT ALIGNED ALIGNED TENSIONER PULLEY ALIGNMENT WITH TENSIONER FIGURE 16 BOLT PULLEY ALIGNMENT WITH TENSIONER FIGURE 17 NUT ALIGN TENSIO...

Page 16: ...pressure to deflect belt 1 64 for every inch of span length or 1 5mm per 100mm of span length Example Deflection distance of a 40 span would be 40 64 or 5 8 Example Deflection distance of a 400mm spa...

Page 17: ...1205 5 80 1250 6 25 6000 530 1 30 630 1 75 710 2 15 785 2 60 850 3 05 910 3 45 970 3 90 1025 4 35 1075 4 80 1120 5 20 1170 5 65 1215 6 10 1255 6 55 6250 545 1 40 640 1 90 720 2 35 795 2 80 860 3 25 9...

Page 18: ...e CFM Wet Indoor Coil Cond enser Reheat Coil Gas Heat Exchanger Electric Heat Econo mizer Filters Horizontal Roof Curb 156H 180H 180U 240U 210H 240H 300S Low Standard Heat Medium Heat High Heat 156 th...

Page 19: ...57A7701 N A N A 4 3 High 5 850 1045 1VP65x1 1 8 100239 03 BK110H 100788 06 BX65 100245 08 BX66 97J5901 H 1 7 16 49M6201 5 5 945 1185 1VP60x1 1 8 41C1301 BK90H x 1 7 16 100788 04 BX61 93J9801 BX62 57A...

Page 20: ...age demand will energize the economizer a second stage demand will energize compressors 1 and 2 180U 240U First stage thermostat demand will energize one of the following compressor combinations Compr...

Page 21: ...IGURE 19 156 180H 210 REFRIGERANT CIRCUITS STAGE 2 CONDENSER COILS STAGE 1 EVAPORATOR COIL STAGE 2 EVAPORATOR COIL EVAPORATOR COIL STAGE 1 CONDENSER COIL FIGURE 20 240H 300S REFRIGERANT CIRCUITS STAGE...

Page 22: ...pansion valve and liquid line drier provided with the unit are approved for use with R410A Do not replace them with components designed for use with R22 R410A refrigerant is stored in a pink cylinder...

Page 23: ...rigerant to the system If measured liquid temperature is lower than the target liquid temperature recover some refrigerant from the system 5 Add or remove charge in increments Allow the system to stab...

Page 24: ...0 380 123 437 126 512 134 250 138 287 140 328 139 378 142 431 145 491 151 260 157 298 160 340 163 385 165 435 167 494 TABLE 6 LGH LCH210H NORMAL OPERATING PRESSURES ALUMINUM COIL Normal Operating Pres...

Page 25: ...120 432 123 497 128 251 131 289 133 331 136 376 139 430 142 486 149 264 154 301 157 345 157 387 161 442 165 493 TABLE 8 LGH LCH300S NORMAL OPERATING PRESSURES ALUMINUM COIL Normal Operating Pressures...

Page 26: ...5 170 LGH LCH156 CHARGING CURVE CIRCUIT 1 Suction Pressure psig Outdoor Temperature F 115 105 95 85 75 65 175 180 130 60 70 80 90 100 110 120 105 110 115 120 125 130 135 140 145 150 155 160 165 170 LG...

Page 27: ...27 507124 04 3 2016 70 80 90 100 110 120 110 115 120 125 130 135 140 145 150 155 160 165 170 LGH LCH156 CHARGING CURVE CIRCUIT 3 Suction Pressure psig Outdoor Temperature F 115 105 95 85 75 65 175 180...

Page 28: ...0 155 160 165 170 LGH LCH180 CHARGING CURVE CIRCUIT 1 Suction Pressure psig Outdoor Temperature F 115 105 95 85 75 65 60 70 80 90 100 110 120 100 105 110 115 120 125 130 135 140 145 150 155 160 165 17...

Page 29: ...29 507124 04 3 2016 60 70 80 90 100 110 120 100 105 110 115 120 125 130 135 140 145 150 155 160 165 170 115 105 95 85 75 65 Suction Pressure psig Outdoor Temperature F LGH LCH180 CHARGING CURVE CIRCU...

Page 30: ...0 165 170 LGH LCH210 CHARGING CURVE CIRCUIT 1 Suction Pressure psig Outdoor Temperature F 115 105 95 85 75 65 175 130 60 70 80 90 100 110 120 110 115 120 125 130 135 140 145 150 155 160 165 170 LGH LC...

Page 31: ...1 507124 04 3 2016 60 70 80 90 100 110 120 100 105 110 115 120 125 130 135 140 145 150 155 160 165 170 LGH LCH210 CHARGING CURVE CIRCUIT 3 Suction Pressure psig Outdoor Temperature F 115 105 95 85 75...

Page 32: ...0 145 150 155 160 165 170 Suction Pressure psig 60 70 80 90 100 110 120 130 115 105 95 85 75 65 Outdoor Temperature F LGH LCH240 CHARGING CURVE CIRCUIT 2 100 105 110 115 120 125 130 135 140 145 150 15...

Page 33: ...145 150 155 160 165 170 Suction Pressure psig 115 105 95 85 75 65 Outdoor Temperature F 70 80 90 100 110 120 130 LGH LCH240 CHARGING CURVE CIRCUIT 4 100 105 110 115 120 125 130 135 140 145 150 155 160...

Page 34: ...160 170 LGH LCH300S CHARGING CURVE CIRCUIT 1 Suction Pressure psig Outdoor Temperature F 115 105 95 85 75 65 130 100 70 80 90 100 110 120 110 120 130 140 150 160 170 LGH LCH300S CHARGING CURVE CIRCUI...

Page 35: ...170 LGH LCH300S CHARGING CURVE CIRCUIT 3 Suction Pressure psig Outdoor Temperature F 115 105 95 85 75 65 130 100 70 80 90 100 110 120 110 120 130 140 150 160 170 LGH LCH300S CHARGING CURVE CIRCUIT 4 S...

Page 36: ...in increments Allow the system to stabilize each time refrigerant is added or removed 7 Use the following approach method along with the normal operating pressures to confirm readings TABLE 9 LG LC Se...

Page 37: ...3 Dis 10 psi g Suc 5 psi g Dis 10 psi g Suc 5 psi g Dis 10 psi g Suc 5 psi g Dis 10 psi g Suc 5 psi g 65 F 270 13 261 130 260 141 252 135 75 F 306 137 299 135 298 144 290 137 85 F 347 140 340 137 340...

Page 38: ...5 300S Reheat 3 F 1 1 7 C 0 5 3 F 1 1 7 C 0 5 8 F 1 4 4 C 0 5 8 F 1 4 4 C 0 5 G Compressor Controls See unit wiring diagram to determine which controls are used on each unit 1 High Pressure Switch S4...

Page 39: ...FAN 5 COND FAN 4 COND FAN 1 COND FAN 2 COND FAN 6 COND FAN 3 240H 300S Condenser fans 1 2 and 3 are energized on a Y1 cooling demand condenser fans 4 5 and 6 are energized on a Y2 cooling demand Cond...

Page 40: ...automatic spark ignition system There is no pilot In case of a safety shutdown move thermostat switch to OFF and return the thermostat switch to HEAT to reset ignition control WARNING Electric shock h...

Page 41: ...iately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions If you do not smell gas go to the next step 7 Turn gas valve switch to ON See figure 26 On Honeywell VR8305...

Page 42: ...28 C Heating Adjustment Main burners are factory set and do not require adjustment The following manifold pressures are listed on the gas valve Natural Gas Units Low Fire 1 6 w c not adjustable Natura...

Page 43: ...until design CFM is reached 1The Unit Controller will prompt when more cooling stages are available depending on the number of compressors and the control mode D Set Damper Minimum Position To maintai...

Page 44: ...enu reads CONFIGURATION ID 1 Change the 6th character position to A for automatic bypass option Press SAVE Caution Units not equipped with an inverter will have the 6th character set to N indicating t...

Page 45: ...ooling 2 Minimum CFM 160 CFM ton Unit Blower Speed Airflow CFM LGH LCH180U Med Low 2400 LGH LCH240U Med Low 3200 Cooling 3 Minimum CFM 190 CFM ton Unit Blower Speed Airflow CFM LGH LCH180U High 2850 L...

Page 46: ...Stage T Stat 3 and 4 Compressor Units AND Zone Sensor 4 Clg Stages 3 Compressor Units 1 Economizer With Outdoor Air Suitable Three Compressor Units Y1 Demand Compressors Off Blower Cooling Low Dampers...

Page 47: ...1 is energized and blower stays on cooling high 180U 240U If dampers are at maximum open for three minutes two compressors one from each circuit are energized and blower stays on cooling high Y3 Dema...

Page 48: ...ccuracy Keep the air intake openings on the sensor clean and free of obstructions and debris Check Out Test hot gas reheat operation using the following procedure 1 Make sure reheat is wired as shown...

Page 49: ...E 3 CHECK VALVE Note Two refrigerant circuits are shown both circuits operate during reheat FIGURE 30 COOLING MODE REFRIGERANT ROUTING 156 180H 210 UNITS REHEAT COIL CIRCUIT 1 CONDENSER COIL CIRCUIT 2...

Page 50: ...AGE 2 EVAPORATOR COIL Note Two refrigerant circuits are shown both circuits operate during reheat 4 FIGURE 32 COOLING MODE REFRIGERANT ROUTING 240 AND 300S UNITS REHEAT COIL CIRCUIT 1 CONDENSER COIL C...

Page 51: ...and Compressor 3 Cooling1 Compressor 1 2 Reheat and Compressor 3 Cooling1 Reheat Y1 Y2 Compressor 1 2 Cooling2 Compressor 1 2 Reheat and Compressor 3 4 Cooling2 Reheat Y1 Y2 Y3 Compressor 1 2 3 Coolin...

Page 52: ...us operation Verify proper operation after servicing C Burners Gas Units Periodically examine burner flames for proper appearance during the heating season Before each heating season examine the burne...

Page 53: ...as follows 1 Shut off power supply and gas to unit 2 Disconnect pressure switch air tubing from combustion air inducer port 3 Remove and retain screws securing combustion air inducer to flue box Remov...

Page 54: ...ce Take care not to fracture the braze between the fins and refrigerant tubes Reduce pressure and work cautiously to prevent damage Conventional Fin Tube Condenser Clean condenser coil annually with d...

Page 55: ...5 LGH LCH 156H 180H 210H 3 Compressor MSAV Para meter Factory Setting Field Setting Description 156 180 210 Note Any changes to Smoke CFM setting must be adjusted before the other CFM settings Use SET...

Page 56: ...on 5200 CFM 6500 CFM CFM Blower CFM during compressor 1 operation This parameter is inactive for thermostats with 2 stage or 3 stage cooling 8000 CFM 10000 CFM CFM Blower CFM during ventilation SETUP...

Page 57: ...ation 0 0 Damper min position during HIGH blower operation 50 50 Min damper for stage 1 power exhaust operation SETTINGS RTU OPTIONS EDIT PARAMETERS 29 101 101 Open Damper minimum position during G bl...

Page 58: ...red U Power Exhaust 3 Not Installed N Single Stage S Dual Stage D Unconfigured U Power Exhaust Control 4 Not Installed N Damper Position A 5 Network Module N Not Installed B BACnet L LonTalk Lennox 6...

Page 59: ...t Installed Y Installed 8 Load Shedding N Not Installed G Global P297 pin 9 L Installed on DI 2 U Installed on DI 3 9 Electric Heat Field Installed 1 Air Flow Proving Switch S52 3 Overflow Switch S149...

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